Carbureter.



win. RATCLIFFQ I v CARBURETER.

APPLICATION FILED SEPT. 7 1910. 1,046,014.

Patented Dec. 3, 1912 3 SHEETS-SHEET 1.

WITNESSES:

' nrromvsrunrrED srn'rns PA ENT-013F103 BA'I'GLIFF, on Nnwnfin: NEW JERSEY, nssrenon 'ro HYDROGARBOl-id,

I MACHINE COMPANY, A 60R]?ORATI'Oltl' OF NEW J omen-Ema. 11,046,014. Specification 61 e a a -fij Patented De .3;'191a.'

hydro-carbon fuel to the carhus insure that the gasolene shall be osit vely shut off when the throttle is closedgfthat there can be no floodingof the carbureter; tosecure a carbureter com- 'ising two vaporizing portions which can operate both together for high speed or one of them alone for low speed; to thus enable said vaporizing portions to be adjusted differentlymhe for high speed and one for'low,

whereby greater adaptation of thecarbu reter to difierent speeds is secured; to provide suitable means for shutting ofl' said vaporizing portions both from the gasolene supply and by thethrott'le, While the other vaporlzing portion is open both to the gasol'ene supply and to the throttle; to en-' able the vaporizing portion vwhich first comes into action to be opened more or less by the throttle valve While the other vaporizing portion-remains closed; to enable the second vaporizing portion to be opened more or less after'the first one "has been opened to its maximum capacity; to eiiect such control of both vaporizing portions by the throttle valve; tosecure asimple and compact construction, and to obtain other advantages and results as may be brought out in the followingdescription. I i Referring to the accompanying drawings,

in which'like numerals of reference indicate the same parts throughout the several figures, Figure l is a plan of a carbureter of 'myiimproved construction; Fig. 2 is a side el fation' o'fthe same, lookihg-inthe di'rec tiorr indicated by the arrow in. Fi'g'j lyFig. 3fis a detailvievv of a certain. primin de vice; Fig. ily-is a horizontal section "of the carbureter on line of Fig.5 Figi'5 is vertical section taken on line B B of Fig.

m r li ig, 6 is a detail perspective .view of a cal, casings of the residing at.

hich the folloW-{ tical section taken on are to secure with the throttle valvelever in central posien and close the supply of gasoby the other-vaporizing portion .1mm filed September 7, "m serial-No. 580,817.

certain top diskfor attaching thecylindrivaporizing portions Fig; T is "an underneath view of the 'carbureter Fig. 8 is an elevation of-a portion of'thel carburet'er, looking in; the direction'jindicated by the arrow in Fig; 7, and Fig. 9- is a vertionr In, said drawings, 3 indicates a top plate line C"C, Fig. 1-,

and 4 a 'bottom plate, betweenwhich plates extend vertical cylindrical'vapor zing por-' tions 1 and 2. Gasolene or other hydrocarbon liquidfuel is supplied to said vaporizing portions through the said bottompla'te i, and from the tops of the portions 1 and 2 the. va oriz'ed fuel mlxed with air passes.

throng to both vaporizing portions and leading into a duct leading upward from the top plate 3 and adapted to i be connected to an engine."

abarrel throttle valve 5 connected It will be understood that one of the vaporiz'ing portions, as 1?, is adapted to be employed alone atfirst, but'after it has been opened to a certain extent it is supplemented The bottom plate 4' has at the upper surface of its ends similar seats 7 and 8 adapt} ed to receive the cylindrical casings 9 and 10 of the two At the centers of the bottoms of. saidvaporvaporizing portions 1 and 2.1

izing portions are fluid supply openings 11 and 12, respectively; to which passages 1 3 and 14, respectively, plate i'from a tubular valve seat 15 which is bored through the lead through the base base plate transversely .of the line connecting the two end seatsthereof. Saidvalve'seat 15 is'cOnical and;

receives a plugvalve 16, one end of Whi projects beneath the throttle valve5 and re.-'

ceives a'forked head17 non-rotatably secured thereon. A spring'18 between-said head and the bottom plate 4 normally seats the valve 16, and at'the opposite en'd'of the valve seat or boring 15a fuelsup'ply pipe 191 is connected. The said plugvalve-lois hollow from V ward to a point opposite the ends of the ducts '13. and 14,- and has lateral ports 19 and 20 leading outward from its longitudinal its end next the supply;pip'e in-' passage and adapted to register with the beveled outward. At

. vaporizingportion 2 until the vaporizing portion 1 is working sutliciently to supply fuel for low speeds. 1

The fuel supply opening 11 at the center of the bottom of the vaporizing portion 1 flares at its upper-end to provide a seat for the low-erconical end.21 ot the valve stein 22 which is arranged axially of the cylindrical vaporizing portion, said conical lower end serving as aneedlc' valve to control the supplyof fuel tosaid vaporizing portion.

Around the flared fuelsupply opening is a saucer 23-, which causes the air taken in through the opening 24 in the bottom plate to enter the vaporizing port-ion around the edges oi? the saidsaucer. Above said saucer and adjacent thereto, an annular flange 25.

projects inwardfrom the walls'of the cylindrical casing 9 and has at its. inner edgea' downwardly-projecting rib 26. This flange '25. and its rib 26 direct the currentof a'ir passing upward around the edges of the saucer 23 inwardly toward the center of said saucer and ,dgwnwardly toward the bottom,

of the 'same. Thus said air tends to most effectively vaporize the gasolene or other fluid which has escaped through the supply opening 11 into the said saucer flange 25 there is within the cylindrical casing 9 a slidable ring 27 which is long enoughto secure a stable bearing in the cylindrical casing, and has itslower edges preferably one circumferential point of its upper edge are fingers 28. 28 extending radially inward and adapted to receive between themselves a vertical plunger 29 which has fixed collars both above and below said fingers so that the ring will move up anddown with the plunger. Said plunger is at its upper-end made rotatably fast to the lower end of a screw 30 which is tapped into the top plate 3 and has above the same a head 31 for turning to regulate the height of the ring 27. Within the said ring 27 is a diaphragm 32 fast upon the said stem 22 and adapted to pass loosely up through the ring 27 if desired. Obviously by raising or lowering the ring 27, a greater or less space is provided for the passage of mixture around the edges of said diaphragm 32, and thus the space through which the vaporizing portion can take in air is varied.

-- Movement of the valve stem 22 in an upward direction is limited by a screw 33 threaded into the top plate 3 of the carbu- "reter and abutting at its inner end the top of the valve stem. A look nut 34 holds sai Above the I bearings for the vertically sliding plunger and valve stem. Said disk is peripherally recessed or cut away, as'at 38, see Fig. 6, to

provide free-access to the throttle port hereinatter to be described, and is also apertured as at 39 for the same purpose. The cylindrical casing 10 of the other vaporizing por-' tion 2 similarly supplied with parts like those 2l.to.39 inclusive which have just been described in connection with the vaporizing portion 1, and said parts for the second vaporizing portion 2 have been designated by reference numerals =10 to 56 inclusive and are thought to need no further description here. The two vaporizing portions work in the same manner, but their rings 27 and 46 i are adjusted todifl'erent positions, as shown in Fig. 5, that of the vaporizing portion 1 being low so-as to admit only a little air for low speed of the engine and that of the vaporizing portion 2 being high as to admit a greater amount of air for high speeds of the engine. Preferably the heads 31 and 5300f the screws 30 and 49 for adjusting the rings 27 and 46 have flat sides which bear against the opposite ends of a. leaf spring '59 held in a bracket 60, to prevent said screws from turning inadvertently, as by jarring. 1

. Beneath the pipe 6 which leads from the carbureter to the engine is an extension 61 from the upper parts of the cylinders 9 and 10, and into which passages-62 and 63 lead from said cylinders, respectively. The throttle valve 5 is located in said extension, in axial alinement with the pipe 6, asshown, and controls the passages 62,63 from the two vaporizing portions. Preferably the extension 61 is a casting, as shown, secured to the top plate 3 by means of lugs 64,. 64, and having above said ugs an annular rim 65 which fits into a recess 66 of the top plate, referring more especially to Fig. 9 of the drawings. The cylindrical throttle valve 5 has at'its lower end a stem which projects through the bottom of the extension '61 and'has fast upon itself anarm 67 for turning the throttle valve. The passages 62 and 63 of the extension 61 fit nicely into openings 68 and 69 cut in the sides of the cylinders 9 and 10, respectively, and adjacent to the ports thus formed are the recesses 38' and 57 of the top disks 35 and 54, already described, which secure the full capacities of the ports. I

The throttle valve 5 has in its side wall two ports 70 and 71 which are adapted to register with the passages 62 and 63, re-

. fully opened position, as shown in dotted lines in Fig. 4.

When the throttle is closed, however, both ports 70 and 71' lie against closed portions of the walls of the throttle casing and the walls of the throttle cover thepassages 62 and 63, as shown in full lines in Fig. 4. Furthermore, when the throttle commences to open, its port 70 first begins to register with the passage 62, and

not until this passage 62 has been' opened to practically the full capacity of the va orizing portion 1 does the otherport 71 of the" throttle begin to register with its passage 63 leading to the vaporizing portion 2. The vaporizing portions are thus opened up by the throttle valve in sequence and not simultaneously.

The turning head 17 of the plug valve 16 which opens and closes the supply of gasolene or other hydro carbon fluid is connected to the arm 67 which swings the throttle valve 5, so that the movements of said throttle valve control also the said plug valve. This connection is preferably made by an auxiliary lever 72 whichis pivoted at one end in the fork of the head'18 and at its other end has a ball 73 fitting in a socket 74 at the under side of the arm 67. The" proportion and relation of the parts are such that'as the arm 67 is swung to operate .the throttle valve, the plug valve 16 opens or closes the gasolene supply accordingly. For instance, when the throttle is .closed entirely, as shown in Fig. 1, the feed valve is also closed, but as the -throttle begins. to

open the passage 62 to the vaporizing portion 1, the feed valve 16 admits'gasolene to i said vaporlzlng portion 1. So longas the gasolene feed being valves 21 and passage 63 to the vaporizing portion- 2 remains closed by the throttle valve 5, the feed valve 16 does not admit any gasolene to said vaporizing portion 2, but when said passage 63 begins to -open in addition to.

the passage 62, the'feed valve 16 admits gasolene to the vaporizing portion 2, its port to the vaporizing portion 1 also rema'ining open at the same time.

It will be understood that the plugvalve 16 is only a positive shut-off to prevent the "left running when r the engine is stopped, and that the conical 40 automatically control the feeding of fuel to the vaporizing portions, the diaphragms 32 and 51 raising said needle valves-according to the suction. In ordertherefore to initially open the autoinatic'valve 32 I provide upon the stem "of saidvalve a stop, 7 5 beneath which normally lies loose; the fork76 of a sliding rod 77 which extends up through the top plate 3 and is provided above the same with abandle 78. bviously by pulling this handle up, thevalve 21 is opened to admit gasolene, but-at'other times the fork 76 cloesv notin- 'as it is swung.

to said casing, I ing above the air and fuel inlets adapted '110 suction therethrough, a ring in said casing i portions 'in' succession;

terfere with automatic movement of the valve and its stem 21. Stops, as shown at 7 9 and 80 may be employed to suitably limit movementlof the lever 67 in'either direction Having thus described the invention, what I claim is: 1

1. In a carbureter, the combination with a. base plate, between said a top plate, vaporizing portions base plate and top plate, the i base plate having a fuel duct branching to 1 said vaporizing portions, said fuel duct adapted to op a plug valve jin;v en and close said branches, an outlet through said top" plate at one'jside of said vaporizing portions,

an upright dylindrical throttle valve adapt-1;

ed to connect said vaporizing portions with said outlet, a crank arm upon the lower end .of said throttle valve adapted to swing in a plane substantially parallel to the bottom I plate above the same into and out of a position substantially parallel to said plug-{ valve, and a radial arm for said plug valve having its outer end forming a ball-andsocket joint with said crank arm interme-. diate of its ends and at its under side.

2. In a vaporizer, the combination of a casing adapted to receive air-and fuel at its lower part, means for supplying air and fuel to said casin' a diaphragm in said casing above the air and fuel inlets adapted to be moved longitudinally of the casing by suction therethrough, a ring abovesaid diaphragm slidably engaging the walls of the r casing and having its lower edge beveled downwardly outward, and means for sliding said ring toward and away from the diaphragm and holding it in fixed relation thereto. r

. 3.'In' a vaporizer, the combinatioriof a lower part, means for supplying air and fuel a diaphragm in said cas-- to be moved longitudinally of the c'asingby casing adapted to receive air and fuel at its .7

slidable upon theinner walls thereof to- I,

--ward and. away, from said diaphragm to vary the suction space therearound, said' ring having at one circumferential pointot' its upper edge inwardly projecting a plunger extending-longitudinally 1. In ;a' ca rbureter, the combination of:

'two vaporizing portions, a common outlet for said vaporiz1ng portions,- a throttle fingers,

of the casing between the-said fingers'and having lateral projections above and below said adapted; to open and close said vaporizing 1-- single valve adapted .to connect and disa fuel supply duct, 1 q' connect the vaporizing portions with said fuel duct in succession, and means for operating said throttle and valve together.

5. In a carbureter, the combination of two vaporizing portions, an outlet for said vaporizing portions, a throttle adapted to connect first one of the vaporizing portions and 'then'both ofthem with said outlet, a, fuel supply duct, a single valve adapted toconnect first one of the vaporizing portions and then both of them with said fuel duct, and means for operating said'throttle and- .valve together.

6. In acarbureter, the combination of two vaporizing portions, an outlet for said vaporizing portions,means adapted to connect first one of the vaporizing portions and then both of them with said outlet and to' disconnect them in reverse order, a fuel supply duct, a single valve adapted to connect first one of the vaporizing portions and then both of them with said fuel duct and to disconnect them in reverse order, and means for operating said throttle and valve together.

7. In a vaporizer, the combination of a cylindrical casing adapted to receive air at its bottom, a fuel saucer arranged in said bottom, means for admitting liquid fuel through the centerof said saucer, means for directing air over the said saucer, a diaphragm above said saucer, a fuel control valve connected to said diaphragm, and means adapted to slide insaid cylinder above said diaphragm toward and away from the same to vary the suction space therearound.

8. In a vaporizer the combination ofa cylindrical casing adapted to receive air at its bottom, a fuel saucer arranged in said bottom, means for admitting liquid fuel through. the center of said saucer, a flange projecting from vthe inside of said casing over the edges of said saucer, a diaphragm above said flange, a fuel-control valve connected to said diaphragm, and means adapt- .ed to slide in said cylinder above said diaphragm toward and away from the same to vary the suction space therearound.

9. In a vaporizer, the combination of a cylindrical casing adapted to receive air at its bottom, a fuel saucer arranged in said bottom, means for admitting liquid fuel through the center of said saucer, means for directing air over the said saucer, a diaphragm above said saucer, a fuel control valve connected to said diaphragm, a ring insaid cylinder above said diaphragm projecting from the walls of the cylinder for sliding said ring'in said cylinder.

1-0. In a vaporizenthe combination of a cylindrical casing adapted to receive air at bottom, a fuel saucer arranged in said bottom, means for admitting liquid fuel through the center of said saucer, means for directing air over the said saucer, a d e phr'agmabove said saucer, a fuel control valve connected to said diaphragm,

a ring in said cylinder above said. diaphragm procylindrical casing adapted to receive ain at its bottom, a fuel saucer arranged in said. bottom, means for admitting liquid fuel through the centerof said-saucer, means for directing air over the said saucer, a needlevvalve adapted to control said central feed inlet of the saucer and having a stem extending up into the cylindrical casing, .a diaphragm fast on said stem, and means adapted to slide in said cylinder above said diaphragm toward and away from the same to vary the suction space therearound.

12. In a carburetor, the combination of a base plate, a top plate, cylinders extending between said base plate and top plate, the base plate having between said cylinders a fuel duct branching to. :said cylinders, a

close said branches, vaporizing mec anisms in said cylinders, an outlet duct projecting from said top plate, a throttle adapted to connect and disconnect said vaporizing portions with said outlet in succession, and means for operating said throttle and fuel valve. Y

13. In a carbureter, the combination of a base plate, a top plate, cylinders extending between said base plate and top plate, the base plate havin between fuel duct branching to said cylinders, a valve in said fuel duct adapted to open and close said branches, vaporizing mechanisms in said cylinders, an outletvduct, a throttle valve in said fuel ductadapted to o en and I said cylinders a valve casing connecting said outlet with said cylinders, a throttle valve in said casing adapted to open one or both of said vaporizing portions, and means for operating sa1d throttle valve and fuel valve together.

14,. In-a carbureter, the combination of a base plate, a top plate, cylinders extending between {said base plate and top plate, the base plate having between said, cylinders a fuel duct branching to said cylinders, a valve in said fuel duct adapted to open and close said branches, vaporizing mechanisms in said cylinders, an outlet duct projecting from said top plate, a throttle adapted to connect and disconnect said vaporizing portions with said outlet in succession, and

means for operating said throttle and fuel valve together.

15. In a carbureter, the combination of a base plate, a top plate, cylinders extending between said base plate and top plate, the base plate having between said cylinders a fuel duct branching to said cylinders, a' a e in sa d fu l ductadapted to pen and close said branches, vaporizing mechanisms in said pylmders, an. outlet duct propetmg from said to plate'at one side of the line of said cyli'n ers, a throttle valve casing beneath said outlet and connecting the same with said cylinders, a throttle valve in said Casing adapted to open one or both of said vaporizing portions, and means for operatmg said throttle valve and fuel valve together.

WILLIAM H. RATCLIFF. WVitnesses:

JAMES H. MARKEY, DAVID B. MULCAHY. 

